1) Drearily 1) In a colorless fashion 2) In a colorless way 3) In a drab manner 4) In a dreary way 5) In a hardly thrilling way 6) In a ho-hum way 7) In a lackluster way 8) Without much pizazz 9) Without much pizzazz 
[adv] - in a drab manner
adverb in a drab manner; `she dresses drably`